River regulation and resilience: an approach for the Yangtze watershed
Congcong Liu,
Yuanfang Chai,
Boyuan Zhu,
Yunping Yang,
Jinyun Deng,
Yong Hu
Affiliations
Congcong Liu
CCCC Second Harbor Engineering Company Ltd, Wuhan 430040, China; Key Laboratory of Large-span Bridge Construction Technology, Wuhan 430040, China; Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure, Wuhan 430040, China; and CCCC Highway Bridge National Engineering Research Centre Co. Ltd, Wuhan 430040, China
Yuanfang Chai
Department of Earth Sciences, Vrije Universiteit Amsterdam, Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
Boyuan Zhu
School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China and Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China
Yunping Yang
Key Laboratory of Engineering Sediment, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin 300456, China
Jinyun Deng
State Key Laboratory of Water Resources and Hydropower Engineering Science, School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Yong Hu
State Key Laboratory of Water Resources and Hydropower Engineering Science, School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Many studies have focused on analyzing variation characteristics of the watershed resilience based on different indicators, while few efforts have been made to quantificationally evaluate contributions of climatic and anthropogenic factors to the varied resilience. In this study, we investigate changes in the seasonal runoff resilience of the entire Yangtze River basin during 1961–2014 by using a convex model and a resilience indicator (Pi). The MIKE 11HD model and the regression method were adopted to further differentiate effects of climate variations and human activities. Results show that climate variation (especially droughts and floods) and human activities exert negative and positive effects, respectively, and become primary reasons for falling and increasing trends in entire watershed resilience. These impacts grow with time under the gradually intensified climate variability and human activity. HIGHTLIGHTS Effects of climatic and anthropogenic factors on the varied watershed runoff resilience are quantificationally estimated.; Investigating the changes in the watershed resilience in the entire Yangtze River.;
